diff --git a/src/drafts/XXXX-how-i-use-nix/index.org b/src/drafts/XXXX-how-i-use-nix/index.org
index 13ee071..e1eb7fb 100644
--- a/src/drafts/XXXX-how-i-use-nix/index.org
+++ b/src/drafts/XXXX-how-i-use-nix/index.org
@@ -75,6 +75,9 @@ fresh ~nix-shell~.
 [nix-shell:~]$ ... here I can use httpie ...
 #+end_src
 
+If I don't use ~httpie~ for a while it will be garbage collected
+eventually.
+
 ** Home Manager
 :PROPERTIES:
 :CUSTOM_ID: home-manager